Six Mile Water

The Six Mile Water is a river in southern County Antrim, Northern Ireland. It is an indirect tributary of the River Bann, via Lough Neagh.

While short, it is closer to 26 miles long than six; accounts vary as to the origins of the name. The most widely accepted story is that Norman soldiers marching from Carrickfergus Castle calculated that they had marched six miles when they forded the river at Ballyclare. When the Normans built the castle at Carrickfergus they placed a line of outposts along the river which was then called the Ollar . In time the soldiers making the journey from Carrickfergus to Antrim reached the river at this spot when they had travelled six miles so began to call the Ollar the Six Mile Water.

Wikipedia